<?php
/**
 * Created by PhpStorm.
 * User: zhangrongxiang
 * Date: 2017/6/19
 * Time: 下午8:53
 */

/**
 * 仿写CodeIgniter的FTP类
 * FTP基本操作：
 * 1) 登陆;           connect
 * 2) 当前目录文件列表;  filelist
 * 3) 目录改变;         chgdir
 * 4) 重命名/移动;       rename
 * 5) 创建文件夹;        mkdir
 * 6) 删除;               delete_dir/delete_file
 * 7) 上传;               upload
 * 8) 下载                download
 *
 *
 */
class FTP2
{

    private $hostname = '';
    private $username = '';
    private $password = '';
    private $port = 21;
    private $passive = true;
    private $debug = true;
    private $conn_id = null;

    /**
     * 构造函数
     *
     * @param   array   配置数组 : $config = array('hostname'=>'','username'=>'','password'=>'','port'=>''...);
     */
    public function __construct($config = array())
    {
        if (count($config) > 0) {
            $this->_init($config);
        }
    }

    /**
     * FTP连接
     *
     * @access  public
     * @param   array   配置数组
     * @return  boolean
     */
    public function connect($config = array())
    {
        if (count($config) > 0) {
            $this->_init($config);
        }

        if (false === ($this->conn_id = @ftp_connect($this->hostname,
                $this->port))
        ) {
            if ($this->debug === true) {
                $this->_error("ftp_unable_to_connect");
            }
            return false;
        }

        if (!$this->_login()) {
            if ($this->debug === true) {
                $this->_error("ftp_unable_to_login");
            }
            return false;
        }

        if ($this->passive === true) {
            ftp_pasv($this->conn_id, true);
        }

        return true;
    }


    /**
     * 目录改变
     *
     * @access  public
     * @param   string  目录标识(ftp)
     * @param   boolean
     * @return  boolean
     */
    public function chgdir($path = '', $supress_debug = false)
    {
        if ($path == '' OR !$this->_isconn()) {
            return false;
        }

        $result = @ftp_chdir($this->conn_id, $path);

        if ($result === false) {
            if ($this->debug === true AND $supress_debug == false) {
                $this->_error("ftp_unable_to_chgdir:dir[" . $path . "]");
            }
            return false;
        }

        return true;
    }

    /**
     * 目录生成
     *
     * @access  public
     * @param   string  目录标识(ftp)
     * @param   int     文件权限列表
     * @return  boolean
     */
    public function mkdir($path = '', $permissions = null)
    {
        if ($path == '' OR !$this->_isconn()) {
            return false;
        }

        $result = @ftp_mkdir($this->conn_id, $path);

        if ($result === false) {
            if ($this->debug === true) {
                $this->_error("ftp_unable_to_mkdir:dir[" . $path . "]");
            }
            return false;
        }

        if (!is_null($permissions)) {
            $this->chmod($path, (int)$permissions);
        }

        return true;
    }

    /**
     * 上传
     *
     * @access  public
     * @param   string  本地目录标识
     * @param   string  远程目录标识(ftp)
     * @param   string  上传模式 auto || ascii
     * @param   int     上传后的文件权限列表
     * @return  boolean
     */
    public function upload(
        $localpath,
        $remotepath,
        $mode = 'auto',
        $permissions = null
    ) {
        if (!$this->_isconn()) {
            return false;
        }

        if (!file_exists($localpath)) {
            if ($this->debug === true) {
                $this->_error("ftp_no_source_file:" . $localpath);
            }
            return false;
        }

        if ($mode == 'auto') {
            $ext = $this->_getext($localpath);
            $mode = $this->_settype($ext);
        }

        $mode = ($mode == 'ascii') ? FTP_ASCII : FTP_BINARY;

        $result = @ftp_put($this->conn_id, $remotepath, $localpath, $mode);

        if ($result === false) {
            if ($this->debug === true) {
                $this->_error("ftp_unable_to_upload:localpath[" . $localpath . "]/remotepath[" . $remotepath . "]");
            }
            return false;
        }

        if (!is_null($permissions)) {
            $this->chmod($remotepath, (int)$permissions);
        }

        return true;
    }

    /**
     * 下载
     *
     * @access  public
     * @param   string  远程目录标识(ftp)
     * @param   string  本地目录标识
     * @param   string  下载模式 auto || ascii
     * @return  boolean
     */
    public function download($remotepath, $localpath, $mode = 'auto')
    {
        if (!$this->_isconn()) {
            return false;
        }

        if ($mode == 'auto') {
            $ext = $this->_getext($remotepath);
            $mode = $this->_settype($ext);
        }

        $mode = ($mode == 'ascii') ? FTP_ASCII : FTP_BINARY;

        $result = @ftp_get($this->conn_id, $localpath, $remotepath, $mode);

        if ($result === false) {
            if ($this->debug === true) {
                $this->_error("ftp_unable_to_download:localpath[" . $localpath . "]-remotepath[" . $remotepath . "]");
            }
            return false;
        }

        return true;
    }

    /**
     * 重命名/移动
     *
     * @access  public
     * @param   string  远程目录标识(ftp)
     * @param   string  新目录标识
     * @param   boolean 判断是重命名(FALSE)还是移动(TRUE)
     * @return  boolean
     */
    public function rename($oldname, $newname, $move = false)
    {
        if (!$this->_isconn()) {
            return false;
        }

        $result = @ftp_rename($this->conn_id, $oldname, $newname);

        if ($result === false) {
            if ($this->debug === true) {
                $msg = ($move == false) ? "ftp_unable_to_rename" : "ftp_unable_to_move";
                $this->_error($msg);
            }
            return false;
        }

        return true;
    }

    /**
     * 删除文件
     *
     * @access  public
     * @param   string  文件标识(ftp)
     * @return  boolean
     */
    public function delete_file($file)
    {
        if (!$this->_isconn()) {
            return false;
        }

        $result = @ftp_delete($this->conn_id, $file);

        if ($result === false) {
            if ($this->debug === true) {
                $this->_error("ftp_unable_to_delete_file:file[" . $file . "]");
            }
            return false;
        }

        return true;
    }

    /**
     * 删除文件夹
     *
     * @access  public
     * @param   string  目录标识(ftp)
     * @return  boolean
     */
    public function delete_dir($path)
    {
        if (!$this->_isconn()) {
            return false;
        }

        //对目录宏的'/'字符添加反斜杠'\'
        $path = preg_replace("/(.+?)\/*$/", "\\1/", $path);

        //获取目录文件列表
        $filelist = $this->filelist($path);

        if ($filelist !== false AND count($filelist) > 0) {
            foreach ($filelist as $item) {
                //如果我们无法删除,那么就可能是一个文件夹
                //所以我们递归调用delete_dir()
                if (!@unlink($item)) {
                    $this->delete_dir($item);
                }
            }
        }

        //删除文件夹(空文件夹)
        $result = @ftp_rmdir($this->conn_id, $path);

        if ($result === false) {
            if ($this->debug === true) {
                $this->_error("ftp_unable_to_delete_dir:dir[" . $path . "]");
            }
            return false;
        }

        return true;
    }

    /**
     * 修改文件权限
     *
     * @access  public
     * @param   string  目录标识(ftp)
     * @return  boolean
     */
    public function chmod($path, $perm)
    {
        if (!$this->_isconn()) {
            return false;
        }

        //只有在PHP5中才定义了修改权限的函数(ftp)
        if (!function_exists('ftp_chmod')) {
            if ($this->debug === true) {
                $this->_error("ftp_unable_to_chmod(function)");
            }
            return false;
        }

        $result = @ftp_chmod($this->conn_id, $perm, $path);

        if ($result === false) {
            if ($this->debug === true) {
                $this->_error("ftp_unable_to_chmod:path[" . $path . "]-chmod[" . $perm . "]");
            }
            return false;
        }
        return true;
    }

    /**
     * 获取目录文件列表
     *
     * @access  public
     * @param   string  目录标识(ftp)
     * @return  array
     */
    public function filelist($path = '.')
    {
        if (!$this->_isconn()) {
            return false;
        }

        return ftp_nlist($this->conn_id, $path);
    }

    /**
     * 关闭FTP
     *
     * @access  public
     * @return  boolean
     */
    public function close()
    {
        if (!$this->_isconn()) {
            return false;
        }

        return @ftp_close($this->conn_id);
    }

    /**
     * FTP成员变量初始化
     *
     * @access  private
     * @param   array   配置数组
     * @return  void
     */
    private function _init($config = array())
    {
        foreach ($config as $key => $val) {
            if (isset($this->$key)) {
                $this->$key = $val;
            }
        }

        //特殊字符过滤
        $this->hostname = preg_replace('|.+?://|', '', $this->hostname);
    }

    /**
     * FTP登陆
     *
     * @access  private
     * @return  boolean
     */
    private function _login()
    {
        return @ftp_login($this->conn_id, $this->username, $this->password);
    }

    /**
     * 判断con_id
     *
     * @access  private
     * @return  boolean
     */
    private function _isconn()
    {
        if (!is_resource($this->conn_id)) {
            if ($this->debug === true) {
                $this->_error("ftp_no_connection");
            }
            return false;
        }
        return true;
    }

    /**
     * 从文件名中获取后缀扩展
     *
     * @access  private
     * @param   string  目录标识
     * @return  string
     */
    private function _getext($filename)
    {
        if (false === strpos($filename, '.')) {
            return 'txt';
        }

        $extarr = explode('.', $filename);
        return end($extarr);
    }

    /**
     * 从后缀扩展定义FTP传输模式  ascii 或 binary
     *
     * @access  private
     * @param   string  后缀扩展
     * @return  string
     */
    private function _settype($ext)
    {
        $text_type = array(
            'txt',
            'text',
            'php',
            'phps',
            'php4',
            'js',
            'css',
            'htm',
            'html',
            'phtml',
            'shtml',
            'log',
            'xml'
        );

        return (in_array($ext, $text_type)) ? 'ascii' : 'binary';
    }

    /**
     * 错误日志记录
     *
     * @access  prvate
     * @return  boolean
     */
    private function _error($msg)
    {
        return @file_put_contents('ftp_err.log',
            "date[" . date("Y-m-d H:i:s") . "]-hostname[" . $this->hostname . "]-username[" . $this->username . "]-password[" . $this->password . "]-msg[" . $msg . "]\n",
            FILE_APPEND);
    }
}


$config = array(
    'hostname' => '124.160.116.76',
    'username' => 'hangye_lsp_19@192.168.18.19',
    'password' => 'tb6bCnHNrO',
    'port' => 52816
);

$ftp = new FTP2();

$ftp->connect($config);
$ftp->upload('localfile.log', 'remotefile.log');
